FactoidThis was recorded using waterphones in a cave in Southern England. There are 20 miles of caves creating a reverb of 30 seconds. Lots of microphones were put down the tunnels - some at a distance of about 50 metres - so we could create the illusion of near and distant effects. It was cold, wet, very dark and frankly, terrifying

FactoidThis was recorded using waterphones in a cave in Southern England. There are 20 miles of caves creating a reverb of 30 seconds. Lots of microphones were put down the tunnels - some at a distance of about 50 metres - so we could create the illusion of near and distant effects. It was cold, wet, very dark and frankly, terrifying

FactoidThis was recorded using waterphones in a cave in Southern England. There are 20 miles of caves creating a reverb of 30 seconds. Lots of microphones were put down the tunnels - some at a distance of about 50 metres - so we could create the illusion of near and distant effects. It was cold, wet, very dark and frankly, terrifying

FactoidThis was recorded using waterphones in a cave in Southern England. There are 20 miles of caves creating a reverb of 30 seconds. Lots of microphones were put down the tunnels - some at a distance of about 50 metres - so we could create the illusion of near and distant effects. It was cold, wet, very dark and frankly, terrifying

FactoidThis was recorded using waterphones in a cave in Southern England. There are 20 miles of caves creating a reverb of 30 seconds. Lots of microphones were put down the tunnels - some at a distance of about 50 metres - so we could create the illusion of near and distant effects. It was cold, wet, very dark and frankly, terrifying

FactoidThis was recorded using waterphones in a cave in Southern England. There are 20 miles of caves creating a reverb of 30 seconds. Lots of microphones were put down the tunnels - some at a distance of about 50 metres - so we could create the illusion of near and distant effects. It was cold, wet, very dark and frankly, terrifying

FactoidThis recording which sounds like Gogd's Gong, was actually a large piece of flat metal hung from a wooden frame belonging to percussionist Paul Clarvis. He had it made for him and he calls it his 'puddle' - because of its shape. It was recorded in a cave with a 30 second natural reverb

FactoidThis was recorded using waterphones in a cave in Southern England. There are 20 miles of caves creating a reverb of 30 seconds. Lots of microphones were put down the tunnels - some at a distance of about 50 metres - so we could create the illusion of near and distant effects. It was cold, wet, very dark and frankly, terrifying

FactoidThis was recorded using waterphones in a cave in Southern England. There are 20 miles of caves creating a reverb of 30 seconds. Lots of microphones were put down the tunnels - some at a distance of about 50 metres - so we could create the illusion of near and distant effects. It was cold, wet, very dark and frankly, terrifying

FactoidThis was recorded using waterphones in a cave in Southern England. There are 20 miles of caves creating a reverb of 30 seconds. Lots of microphones were put down the tunnels - some at a distance of about 50 metres - so we could create the illusion of near and distant effects. It was cold, wet, very dark and frankly, terrifying

FactoidThis was recorded using waterphones in a cave in Southern England. There are 20 miles of caves creating a reverb of 30 seconds. Lots of microphones were put down the tunnels - some at a distance of about 50 metres - so we could create the illusion of near and distant effects. It was cold, wet, very dark and frankly, terrifying